Storm Surfer Mage

Citywalk (This creature can not be blocked if your opponent controls a land with the subtype 'city')
When Storm Surfer deals combat damage to a player, until the end of this turn spells you cast gain Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)
I have travelled to each of the seven spires, but Mizu and Wilting are the two I call home.